A Generalized Design Framework for Neutral Point Voltage Balance of Three Phase Vienna Rectifiers
IEEE Transactions on Power Electronics(2019)
摘要
This paper proposes a generalized design framework for three-phase Vienna rectifiers to handle the neutral point voltage balance issue. On the basis of the design framework, it is convenient to construct various neutral point voltage balancing methods with the guarantee of stability. As demonstration, three representative neutral point voltage balance approaches are presented by choosing different zero-sequence voltages. A comprehensive comparison among the three approaches is given in the aspects of input current quality, capacitor voltage fluctuation, and system efficiency. The comparison results provide guidance for constructing the most appropriate approach based on the specific requirement. Finally, simulation and experimental results verify the correctness and effectiveness of the presented approaches and the related performance analysis.
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关键词
Rectifiers,Capacitors,Voltage control,Pulse width modulation,Support vector machines,Stability analysis
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